Last visit was: 28 Apr 2026, 08:36 It is currently 28 Apr 2026, 08:36
Home
Messages
Tests
Schools
Events
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Events & Promotions
Back to Forum
Create Topic
   1  ...  78   79   80   81   82  ...  679   
User avatar
Pt_10
User avatar
Joined: 07 May 2023
Last visit: 06 Oct 2023
Posts: 1
Posts: 1
Kudos: 0
Practice Questions Chat 08 Aug 2023, 08:21
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Last year Shannon listened to a certain public radio station 10 hours per week and contributed $35 to the station. Of the following, which is closest to Shannon’s contribution per minute of listening time last year?
avatar
DG1989
avatar
Joined: 16 Feb 2023
Last visit: 24 Dec 2024
Posts: 140
Own Kudos:
311
Given Kudos: 9
Location: India
Concentration: Finance, Technology
Schools: Kellogg '26
GPA: 4
Schools: Kellogg '26
Posts: 140
Kudos: 311
Practice Questions Chat 08 Aug 2023, 09:26
Kudos
Add Kudos
Bookmarks
Bookmark this Post
AkshiSri
https://gmatclub.com/forum/what-is-the- ... l#p3236165 Can anyone please explain this?
Show more
to solve such questions, calculate the cyclicity of the unit digit. For e.g take 2. When you raise it to the power of 1,2,3,4 and so on the result is 2,4,8,16,32,64,.... so on... so you see here that the unit digit pattern repeats after every 4th iteration i.e. 2,4,8,6,2,4,8,6,2, .... the cyclicity is 4. This way you can check pattern for any number. In this particular question we are asked 3^7 * 2^8 * 7^22.

So here 3^7 will give unit digit as 7, 2^8 will give unit digit as 6 and 7^22 will give unit digit as 9. Now 7*6*9 = 378. Hence unit digit is 8
User avatar
Arpit_Bhardwaj
User avatar
Joined: 13 Jun 2023
Last visit: 08 Sep 2023
Posts: 41
Own Kudos:
37
Given Kudos: 2
Posts: 41
Kudos: 37
Practice Questions Chat 08 Aug 2023, 12:01
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Pt_10
Last year Shannon listened to a certain public radio station 10 hours per week and contributed $35 to the station. Of the following, which is closest to Shannon’s contribution per minute of listening time last year?
Show more
Could you provide with option please?

AkshiSri
https://gmatclub.com/forum/what-is-the- ... l#p3236165 Can anyone please explain this?
Show more
As explained above the unit digts tends to repeat themselves and hence just need to find the cycle and calculate the units digit.
User avatar
anishabis22
User avatar
Joined: 18 Jun 2023
Last visit: 18 Mar 2024
Posts: 2
Own Kudos:
1
Given Kudos: 7
Posts: 2
Kudos: 1
Practice Questions Chat 09 Aug 2023, 07:02
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello, can someone please suggest where I can go through all statistics concepts asked in GMAT (especially around topics such as mean, mode, median, standard deviation)?
User avatar
AkshiSri
User avatar
Joined: 17 Feb 2023
Last visit: 28 Apr 2026
Posts: 9
Own Kudos:
6
Given Kudos: 55
Posts: 9
Kudos: 6
Practice Questions Chat 09 Aug 2023, 07:13
Kudos
Add Kudos
Bookmarks
Bookmark this Post
DG1989
to solve such questions, calculate the cyclicity of the unit digit. For e.g take 2. When you raise it to the power of 1,2,3,4 and so on the result is 2,4,8,16,32,64,.... so on... so you see here that the unit digit pattern repeats after every 4th iteration i.e. 2,4,8,6,2,4,8,6,2, .... the cyclicity is 4. This way you can check pattern for any number. In this particular question we are asked 3^7 * 2^8 * 7^22.
Show more
Thank you for explaining
User avatar
nivivacious
User avatar
Joined: 10 Mar 2015
Last visit: 18 Aug 2024
Posts: 238
Own Kudos:
313
Given Kudos: 175
Location: India
Concentration: Strategy, Marketing
GPA: 3.5
WE:Advertising (Advertising and PR)
Posts: 238
Kudos: 313
Practice Questions Chat 09 Aug 2023, 08:50
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Can anyone link me to a primer on things to know for standard deviation for gmat?
User avatar
gmatophobia
User avatar
Quant Chat Moderator
Joined: 22 Dec 2016
Last visit: 19 Apr 2026
Posts: 3,173
Own Kudos:
11,477
Given Kudos: 1,862
Location: India
Concentration: Strategy, Leadership
Posts: 3,173
Kudos: 11,477
Practice Questions Chat 10 Aug 2023, 02:23
Kudos
Add Kudos
Bookmarks
Bookmark this Post
DS Question 1 - Aug 10

If (x + y)/ z < 0 and z not equal to 0, then is the average of x, y, and z greater than zero?

(1) z = -5 and the range of x, y, and z is 6.

(2) x + y = 2 and the range of x, y, and z is 6.

Source: Kaplan | Difficulty: Hard

PS Question 1 - Aug 10

Tom and Jerry are filling up 500 water balloons apiece. It takes Tom 2 hours longer than Jerry to fi up 500 balloons. Jerry can fill 50% more balloons per hour than Tom. How many water balloons pe hour can Jerry fill?

A. 125
B. 150
C. 180
D. 200
E. 250

Source: TTP | Difficulty: Medium
User avatar
Deepihu
User avatar
Joined: 25 Jul 2023
Last visit: 24 Dec 2023
Posts: 13
Own Kudos:
9
Given Kudos: 6
Location: India
Posts: 13
Kudos: 9
Practice Questions Chat 11 Aug 2023, 22:24
Kudos
Add Kudos
Bookmarks
Bookmark this Post
gmatophobia
DS Question 1 - Aug 10 If (x + y)/ z < 0 and z not equal to 0, then is the average of x, y, and z greater than zero? (1) z = -5 and the range of x, y, and z is 6. (2) x + y = 2 and the range of x, y, and z is 6. Source: Kaplan | Difficulty: Hard
Show more
Both statements are sufficient alone to answer

Deepihu
Both statements are sufficient alone to answer
Show more
A If Z is negative x+y will be positiive so values of x or y would be 1 hence avg will be lesser than zero
B if x+y is positive therefore z will be negative with value -2 or -1 and avg may be above zero or below zero
Therefore A alone is sufficient
User avatar
Deepihu
User avatar
Joined: 25 Jul 2023
Last visit: 24 Dec 2023
Posts: 13
Own Kudos:
9
Given Kudos: 6
Location: India
Posts: 13
Kudos: 9
Practice Questions Chat 11 Aug 2023, 22:46
Kudos
Add Kudos
Bookmarks
Bookmark this Post
gmatophobia
DS Question 1 - Aug 07 Set S has six numbers and their average (arithmetic mean) is 32. What is the median of the numbers? 1) The six numbers are greater than or equal to 31 2) There is “37” in set S Source: Math Revolution | Difficulty: Hard
Show more
Both 1 & 2 together

vishwathols
D
Show more
No is less than 100 so two values to be excluded

gmatophobia
DS Question 1 - August 04 The average (arithmetic mean) of a list of positive numbers is what percent of the sum of the numbers? (1) The sum of the numbers in the list is 150. (2) There are 25 numbers in the list. Source: GMAT Club Tests | Difficulty: Medium
Show more
Both 1&2 together

gmatophobia
PS Question 1 - August 04 30^20 - 20^20 is divisible by all of the following values, EXCEPT: A) 10 B) 25 C) 40 D) 60 E) 64 Source: GMATPrepNow | Difficulty: Hard
Show more
60

gmatophobia
PS Question 1 - August 04 30^20 - 20^20 is divisible by all of the following values, EXCEPT: A) 10 B) 25 C) 40 D) 60 E) 64 Source: GMATPrepNow | Difficulty: Hard
Show more
D i e 60
User avatar
poojaarora1818
User avatar
Joined: 30 Jul 2019
Last visit: 28 Apr 2026
Posts: 1,627
Own Kudos:
784
Given Kudos: 3,823
Location: India
Concentration: General Management, Economics
Schools: Duke '27 Haas '27 Kelley '27 Kellogg '27 McDonough '27
GPA: 3
WE:Human Resources (Real Estate)
Products:
GMAT Club Tests
Schools: Duke '27 Haas '27 Kelley '27 Kellogg '27 McDonough '27
Posts: 1,627
Kudos: 784
Practice Questions Chat 12 Aug 2023, 00:51
Kudos
Add Kudos
Bookmarks
Bookmark this Post
poojaarora1818
I am not sure but IMO it’s A
Show more
Sorry, I had made a mistake. Instead of A it should be option D i.e. 24
User avatar
Antriksh_Duhan
User avatar
Joined: 06 Jul 2023
Last visit: 11 Jan 2024
Posts: 9
Own Kudos:
1
Given Kudos: 2
Posts: 9
Kudos: 1
Practice Questions Chat 13 Aug 2023, 14:44
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello friends

Chai pelo
User avatar
Vctrnd
User avatar
Joined: 07 Aug 2023
Last visit: 23 Aug 2023
Posts: 1
Posts: 1
Kudos: 0
Practice Questions Chat 13 Aug 2023, 15:33
Kudos
Add Kudos
Bookmarks
Bookmark this Post
hey guys, sorry to disturb, is there anyone here attempting French universities?
User avatar
abhishek12321
User avatar
Joined: 04 Aug 2023
Last visit: 29 Aug 2023
Posts: 4
Own Kudos:
2
Location: India
GMAT 1: 360 Q17 V16
GMAT 1: 360 Q17 V16
Posts: 4
Kudos: 2
Practice Questions Chat 13 Aug 2023, 21:12
Kudos
Add Kudos
Bookmarks
Bookmark this Post
P is a two-digit number, what is the unit’s digit of P?
1) The unit’s digit of 7P is 3
2) The unit’s digit of 6P is 6. can you explain?
User avatar
Deepihu
User avatar
Joined: 25 Jul 2023
Last visit: 24 Dec 2023
Posts: 13
Own Kudos:
9
Given Kudos: 6
Location: India
Posts: 13
Kudos: 9
Practice Questions Chat 13 Aug 2023, 21:16
Kudos
Add Kudos
Bookmarks
Bookmark this Post
abhishek12321
P is a two-digit number, what is the unit’s digit of P? 1) The unit’s digit of 7P is 3 2) The unit’s digit of 6P is 6. can you explain?
Show more
1 st alone is sufficient
As 7*9 = x3 so unit digit will 9
Whereas in second it may be 1 or 6
User avatar
gmatophobia
User avatar
Quant Chat Moderator
Joined: 22 Dec 2016
Last visit: 19 Apr 2026
Posts: 3,173
Own Kudos:
11,477
Given Kudos: 1,862
Location: India
Concentration: Strategy, Leadership
Posts: 3,173
Kudos: 11,477
Practice Questions Chat 14 Aug 2023, 02:19
Kudos
Add Kudos
Bookmarks
Bookmark this Post
DS Question 1 - Aug 14

Is x^2-5x+6 = |x-2|*|x-3|?

(1) x > 2.
(2) x > 3.

Difficulty: Medium | Source: Others

PS Question 1 - Aug 14

Seven pieces of rope have an average (arithmetic mean) length of 68 centimeters and a median length of 84 centimeters. If the length of the longest piece of rope is 14 centimeters more than 4 times the length of the shortest piece of rope, what is the maximum possible length, in centimeters, of the longest piece of rope?

(A) 82
(B) 118
(C) 120
(D) 134
(E) 152

Difficulty: Hard | Source: Official Guide
User avatar
Deepihu
User avatar
Joined: 25 Jul 2023
Last visit: 24 Dec 2023
Posts: 13
Own Kudos:
9
Given Kudos: 6
Location: India
Posts: 13
Kudos: 9
Practice Questions Chat 14 Aug 2023, 02:27
Kudos
Add Kudos
Bookmarks
Bookmark this Post
gmatophobia
DS Question 1 - Aug 14 Is x^2-5x+6 = |x-2|*|x-3|? (1) x > 2. (2) x > 3. Difficulty: Medium | Source: Others
Show more
As
X^2 - 5X + 6 = zero for x 2 and 3 ssme is RHS hence for all values => 2

Ontherox
B
Show more
Put 2 ans will be zero
User avatar
Ontherox
User avatar
Joined: 22 Jun 2023
Last visit: 29 Apr 2024
Posts: 30
Own Kudos:
29
Given Kudos: 8
Location: India
Posts: 30
Kudos: 29
Practice Questions Chat 14 Aug 2023, 02:28
Kudos
Add Kudos
Bookmarks
Bookmark this Post
2.5?

RHS is always positive. LHS also has to be positive.

Ontherox
2.5?
Show more
Try negative values also

gmatophobia
PS Question 1 - Aug 14 Seven pieces of rope have an average (arithmetic mean) length of 68 centimeters and a median length of 84 centimeters. If the length of the longest piece of rope is 14 centimeters more than 4 times the length of the shortest piece of rope, what is the maximum possible length, in centimeters, of the longest piece of rope? (A) 82 (B) 118 (C) 120 (D) 134 (E) 152 Difficulty: Hard | Source: Official Guide
Show more
134?
User avatar
Deepihu
User avatar
Joined: 25 Jul 2023
Last visit: 24 Dec 2023
Posts: 13
Own Kudos:
9
Given Kudos: 6
Location: India
Posts: 13
Kudos: 9
Practice Questions Chat 14 Aug 2023, 02:38
Kudos
Add Kudos
Bookmarks
Bookmark this Post
gmatophobia
PS Question 1 - Aug 14 Seven pieces of rope have an average (arithmetic mean) length of 68 centimeters and a median length of 84 centimeters. If the length of the longest piece of rope is 14 centimeters more than 4 times the length of the shortest piece of rope, what is the maximum possible length, in centimeters, of the longest piece of rope? (A) 82 (B) 118 (C) 120 (D) 134 (E) 152 Difficulty: Hard | Source: Official Guide
Show more
134
Arrange in ascending values
X1 + x2 + x3......x7
X7= 4*x1 + 14
X4 median so x4 = 84
To maximise x7 values of x4 x5 x6 to be equal as avg is in left side of median
x1 x2 x3 all to be equal.
Final eq
3x1+ x7 = 224
avatar
DG1989
avatar
Joined: 16 Feb 2023
Last visit: 24 Dec 2024
Posts: 140
Own Kudos:
311
Given Kudos: 9
Location: India
Concentration: Finance, Technology
Schools: Kellogg '26
GPA: 4
Schools: Kellogg '26
Posts: 140
Kudos: 311
Practice Questions Chat 14 Aug 2023, 04:25
Kudos
Add Kudos
Bookmarks
Bookmark this Post
gmatophobia
DS Question 1 - Aug 14 Is x^2-5x+6 = |x-2|*|x-3|? (1) x > 2. (2) x > 3. Difficulty: Medium | Source: Others
Show more
As x^2 - 5x + 6 can be expressed as (x - 2)(x - 3) we need to check if (x - 2)(x - 3) = |x - 2| * |x - 3| or (x - 2) (x - 3) is +ve; Statement 1: x > 2, Hence (x - 3) is >= 0 but (x - 2) < 0, hence insufficient; Statement 2: x > 3 , Hence both (x - 2) and (x -3) > 0. Hence sufficient. Answer is B
User avatar
Arpit_Bhardwaj
User avatar
Joined: 13 Jun 2023
Last visit: 08 Sep 2023
Posts: 41
Own Kudos:
37
Given Kudos: 2
Posts: 41
Kudos: 37
Practice Questions Chat 14 Aug 2023, 04:29
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Is x^2-5x+6 = |x-2|*|x-3|?

Is x^2-5x+6 = |x-2|*|x-3|?

For this to be true in RHS both the mods should open with the same sign.

Analizing choices.

(1) x>2

If we look at it closely. If x>2 then |x-2| will open with a positive sign.
But dont know anything about the sign of |x-3|. If 2<x<3 then this will be negative but if x>3 then it will be positive.

(2) x>3

We can clearly see thatboth mods will open with positive sign.
Hence this statement is suff to answer this question.

Hence (B) is the suspected correct answer per my logic.
   1  ...  78   79   80   81   82  ...  679   
Moderators:
gchandana
193 posts
MBAACCOUNT2025
General GMAT Forum Moderator
473 posts